This replacement front and rear upper arm set fits selected TAMIYA 1/10 buggies. The JR-TFD04-GU components are machined from aluminium, finished in gun metal and sold as a pair to replace stock plastic arms.
Fitting is the standard arm replacement process: remove the OEM arms, inspect and use existing pins and retainers where they fit, install the aluminium arms and confirm suspension movement and geometry. Replace any worn hardware before use.
Aluminium arms reduce flex compared with plastics, aiding repeatable camber and toe settings and simplifying tuning when altering shock rates or roll center for track or off-road use.